Solenoid valve and fuel injector using same
AssigneeDenso Corporation
InventorsNaofumi Adachi, Koichi Ohata, Motoichi Murakami
Life of this patent
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Abstract
A solenoid valve is provided which may be used to inject fuel into an internal combustion engine for automotive vehicles. The solenoid valve includes an armature and stator attracting the armature to open a fluid passage. The solenoid valve also includes a retaining nut and an end body. The retaining nut engages a housing to retain a hollow cylindrical stator casing in the housing. The end body is joined to the casing in alignment therewith to hold the stator within the casing without subjecting the stator to the pressure produced by the engagement of the retaining nut with the housing. This minimizes undesirable loads on the stator.
Claims8
A solenoid valve comprising:
- a housing in which a fluid passage and a valve seat is formed;
- a valve member disposed in said housing, when resting on the valve seat, said valve member closing the fluid passage, when leaving the valve seat, said valve member opining the fluid passage;
- an armature connected to said valve member, said armature being movable in the same direction as that of movement of said valve member;
- a stator attracting said armature to move said valve member, opening the fluid passage;
- a coil producing an attractive force in said stator electromagnetically when said coil is energized;
- a pressure-receiving mechanism provided in contact with said housing;
- a fixing mechanism engaging said housing in contact with said pressure-receiving mechanism to press said pressure-receiving mechanism against said housing;
- and
- an engaging mechanism holding said stator in engagement with said pressure-receiving mechanism without transmitting an external force acting on said pressure-receiving mechanism from said fixing mechanism and said housing, said engaging mechanism comprising a holing member which is formed integrally with said pressure-receiving mechanism on a side of a surface of said pressure-receiving mechanism opposite a housing-contacting surface and which has formed therein a groove with which said stator is fitted.
Dependencies are inferred from the claim text.